#!/usr/bin/node

const Writable=require('stream').Writable;

function GreenStream (){
  Writable.call(this);
  this._write=(chunk,encoding,callback)=>{
    process.stdout.write('\033[1;32m' + chunk + '\033[1;37m');
    callback();
  };
}
GreenStream.prototype=Writable.prototype;
process.stdin.pipe(new GreenStream());
